Drive mechanism
By providing guides and magnetic units on the fixed and movable parts of the lens drive module, the stable movement of the optical element is achieved by using magnetic attraction, solving the challenges of miniaturization and stability and reliability in the prior art, and achieving efficient automatic focus and optical anti-shaking functions.
Patent Information
- Application Number
- CN202421467748.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Priority Date
- 2023-07-21
- Filing Date
- 2024-06-25
- Publication Date
- 2025-06-17
- Estimated Expiration
- 2034-06-25
AI Technical Summary
Existing lens drive modules have challenges in miniaturization and stability and reliability, making it difficult to achieve efficient automatic focus and optical anti-hand shock functions in portable electronic devices.
A driving mechanism is designed, including a fixing part and a movable part. By providing a first and second guide members on the fixing part and a corresponding first and second magnetic units are provided on the movable part, the movable part is stably supported by the guide member by magnetic attraction, thereby achieving stable movement of the optical element.
The driving mechanism can effectively perform automatic focus and optical anti-focus functions on the basis of stability and miniaturization, ensuring normal operation and imaging in a shaking environment, and providing good image quality.
Smart Images
Figure CN222994734U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a driving mechanism. More specifically, the utility model particularly relates to a driving mechanism for driving an optical element to move. Background Art
[0002] With the development of technology, many current electronic devices (such as smart phones or digital cameras) have the functions of taking pictures or videos. The use of these electronic devices is becoming more and more common, and they are developing towards a convenient, thin and light design direction to provide users with more choices.
[0003] Some electronic devices with the functions of taking pictures or videos are provided with a lens driving module to drive an optical element to move, so as to achieve the functions of auto focusing (AF) and optical image stabilization (OIS). Light can pass through the aforementioned optical element and form an image on a photosensitive element.
[0004] However, how to further achieve the miniaturization of the lens driving module and improve its stability and reliability has become an important challenge for the R & D personnel in this technical field. Summary of the Utility Model
[0005] The purpose of the utility model is to provide a driving mechanism to solve at least one of the above problems.
[0006] In view of the aforementioned well-known problems, an embodiment of the utility model provides a driving mechanism for driving an optical element to move. The optical element has an optical axis. The driving mechanism includes a fixed part, a movable part and a driving component. The movable part is connected to the fixed part, and the optical element is arranged on the movable part. The driving component is used to drive the movable part to move relative to the fixed part.
[0007] In an embodiment, the driving mechanism further includes a first guiding member arranged on the fixed part and connected to the movable part for guiding the movable part to move relative to the fixed part along the direction of the optical axis.
[0008] In an embodiment, the driving mechanism further includes a first magnet arranged on the movable part, and the movable part has a first recess. The first magnet and the first guiding member generate a first magnetic attraction force to keep the first guiding member and the first recess in contact.
[0009] In an embodiment, the driving mechanism further includes a first magnet cover arranged on the movable part and covering the first magnet. The first magnet cover is located between the first magnet and the first guiding member.
[0010] In one embodiment, the foregoing first magnet cover is a non-magnetic metal sheet.
[0011] In one embodiment, a distance is provided between the foregoing first magnet cover and the foregoing first guiding member.
[0012] In one embodiment, the foregoing movable part further has a first protrusion, and the foregoing first magnet cover is formed with a first card slot, wherein the first protrusion is embedded in the first card slot.
[0013] In one embodiment, the foregoing first magnet is a single-pole or multi-pole magnet.
[0014] In one embodiment, the magnetic field lines of the foregoing first magnet are parallel to a first axial direction, and the first axial direction is perpendicular to the foregoing optical axis.
[0015] In one embodiment, the central connection line of the foregoing first magnet and the foregoing first guiding member is parallel to the foregoing first axial direction.
[0016] In one embodiment, the foregoing first recess has a V-shaped structure.
[0017] In one embodiment, the foregoing driving mechanism further includes a second guiding member, which is disposed on the foregoing fixed part and connected to the foregoing movable part for guiding the foregoing movable part to move relative to the foregoing fixed part along the foregoing optical axis direction, wherein the first and second guiding members are located at two opposite corners of the foregoing fixed part.
[0018] In one embodiment, the foregoing driving mechanism further includes a second magnet disposed on the foregoing movable part, and the foregoing movable part has a second recess, wherein the second magnet and the second guiding member generate a second magnetic attraction force to keep a contact surface between the second guiding member and the second recess in contact.
[0019] In one embodiment, the foregoing driving mechanism further includes a second magnet cover, which is disposed on the foregoing movable part and shields the foregoing second magnet, wherein the contact surface is located between the second magnet and the second guiding member.
[0020] In one embodiment, the foregoing movable part further has a second protrusion, and the foregoing second magnet cover is formed with a second card slot, wherein the second protrusion is embedded in the second card slot.
[0021] In one embodiment, the magnetic field lines of the foregoing first and second magnets are parallel to a first axial direction, and the first axial direction is perpendicular to the foregoing optical axis.
[0022] In one embodiment, the contact surface is a plane perpendicular to the foregoing first axial direction.
[0023] In one embodiment, the base has a first convex post and a second convex post, and the first and second guiding members are respectively fixed on the first and second convex posts.
[0024] In one embodiment, the first and second convex posts are located at two opposite corners of the base.
[0025] In one embodiment, at least a part of the second convex post is located within the second recessed portion.
[0026] The beneficial effect of the present utility model is that by providing a first guiding member and a second guiding member on the fixing portion of the driving mechanism, and providing a first magnetic unit and a second magnetic unit corresponding to the first and second guiding members respectively on the moving portion, a magnetic attractive force can be generated to enable the moving portion to stably rest on the first and second guiding members, so that the driving mechanism can stably perform the functions of autofocus (AF) or optical image stabilization (OIS), and can also operate and image normally in a shaking environment to provide good image quality. Description of the Drawings
[0027] Figure 1 An exploded view of a driving mechanism according to an embodiment of the present utility model.
[0028] Figure 2 Denote Figure 1 Another perspective exploded view of the driving mechanism in
[0029] Figure 3 Denote Figure 1 and Figure 2 A three-dimensional view of the assembled driving mechanism in
[0030] Figure 4 Denote Figure 1 and Figure 2 Another perspective three-dimensional view of the assembled driving mechanism in
[0031] Figure 5 An exploded view showing the first magnetic unit and the second magnetic unit before being combined with the carrier.
[0032] Figure 6 A three-dimensional view showing the first magnetic unit and the second magnetic unit after being combined with the carrier.
[0033] Figure 7 Another perspective three-dimensional view showing the first magnetic unit and the second magnetic unit after being combined with the carrier.
[0034] Figure 8 Denote Figure 3 and Figure 4 A top view of the driving mechanism in after removing the housing and the frame F.
[0035] Figure 9 Represents Figure 8 An enlarged view of area A1 in
[0036] Figure 10 Represents Figure 8 An enlarged view of area A2 in
[0037] Figure 11 An exploded view of the first magnetic unit.
[0038] Figure 12 A schematic diagram showing the first magnetic unit installed in the first groove of the carrier.
[0039] Figure 13 An exploded view of the second magnetic unit.
[0040] Figure 14 A schematic diagram showing the second magnetic unit installed in the second groove of the carrier.
[0041] The reference numerals are as follows:
[0042] 100: Driving mechanism
[0043] A1: Area
[0044] A2: Area
[0045] B: Plastic base
[0046] B1: First boss
[0047] B2: Second boss
[0048] BS: Lower spring piece
[0049] C: Coil
[0050] E: Circuit component
[0051] F: Frame
[0052] H: Housing
[0053] L1: Center line
[0054] L2: Center line
[0055] LH: Carrier
[0056] LH1: First recess
[0057] LH11: First bump
[0058] LH1’: First groove
[0059] LH2: Second recess
[0060] LH20: Contact surface
[0061] LH21: Second bump
[0062] LH2’: Second groove
[0063] M: Magnetic component
[0064] m1: First magnetic unit
[0065] m11: First magnet
[0066] m12: First magnet cover
[0067] m121: First card slot
[0068] m2: Second magnetic unit
[0069] m21: Second magnet
[0070] m22: Second magnet cover
[0071] m221: Second card slot
[0072] N: Winding post
[0073] O: Optical axis
[0074] R1: First guide
[0075] R2: Second guide Detailed implementation manners
[0076] The driving mechanism of the embodiments of the present utility model will be described below. However, it can be easily understood that the embodiments of the present utility model provide many suitable utility model concepts that can be implemented in a wide variety of specific backgrounds. The specific embodiments disclosed are only used to illustrate the use of the present utility model in a specific way and are not intended to limit the scope of the present utility model.
[0077] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art to which this disclosure belongs. It can be understood that these terms, such as those defined in a commonly used dictionary, should be interpreted as having a meaning consistent with the relevant technology and the background or context of this disclosure, and should not be interpreted in an idealized or overly formal manner unless specifically defined herein.
[0078] The foregoing and other technical contents, features, and effects of the present utility model will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front, or back, etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used in the embodiments are for illustration and not for limiting the present utility model.
[0079] First, please refer to Figures 1 to 4 together, where Figure 1 shows an exploded view of a drive mechanism 100 according to an embodiment of the present utility model, Figure 2 represents Figure 1 another perspective exploded view of the drive mechanism 100 in Figure 3 represents Figure 1 and Figure 2 a three-dimensional view of the drive mechanism 100 after assembly in Figure 4 represents Figure 1 and Figure 2 another perspective three-dimensional view of the drive mechanism 100 after assembly in
[0080] As shown in Figure 1 , Figure 2 , Figure 3 and Figure 4 The drive mechanism 100 of this embodiment is, for example, a voice coil motor (VCM), which can be installed inside a mobile phone or other portable electronic device to drive an optical element (such as an optical lens) to move, so as to achieve functions such as autofocus (AF) or optical image stabilization (OIS).
[0081] The foregoing drive mechanism 100 includes a hollow housing H, a polygonal plastic base B, a first guide member R1, a second guide member R2, a circuit component E (such as a flexible circuit board), at least one lower spring piece BS, a carrier LH, a frame F, at least one magnetic element M, at least one coil C, a first magnetic unit m1, and a second magnetic unit m2.
[0082] In this embodiment, the foregoing housing H has a hollow structure and is combined with the base B, so as to jointly form a fixed part of the drive mechanism 100. On the other hand, the foregoing circuit component E is fixed on the base B and surrounds an optical axis O of the foregoing optical element, and the lower spring piece BS is disposed on the top side of the base B and connected to the carrier LH, wherein the foregoing circuit component E can be electrically connected to the coil C disposed on the carrier LH through the lower spring piece BS, so as to form a circuit.
[0083] It should be understood that the aforementioned carrier LH is movably received in the housing H, and the aforementioned optical element (not shown in the figures) can be fixed within the carrier LH, wherein the aforementioned carrier LH constitutes a movable part that can move relative to the aforementioned fixed parts (housing H and base B).
[0084] Specifically, the aforementioned carrier LH is connected to the base B through a lower spring piece BS, such that the carrier LH can be suspended in the drive mechanism 100 in a movable manner. Through the aforementioned mechanism configuration, external light can enter the drive mechanism 100 along the optical axis O (Z-axis direction) of the optical element, and the light will pass through the optical lens and reach an image sensing element (not shown) located below the base B, thereby generating a digital image.
[0085] It should be particularly noted that the aforementioned frame F is fixed inside the housing H, and magnetic elements M (such as magnets) are respectively provided on the four side edges of the frame F. In addition, coils C are respectively provided on the four side edges of the aforementioned carrier LH, corresponding to the aforementioned magnetic elements M, wherein the aforementioned coils C and magnetic elements M can form a drive assembly.
[0086] When an electric current signal is applied to the aforementioned coils C, the carrier LH and the optical element disposed therein can be driven by the magnetic force generated between the coils C and the magnetic elements M to move together relative to the base B and the housing H along the optical axis O direction (Z-axis direction), thereby achieving the functions of autofocus (AF) or optical image stabilization (OIS).
[0087] From Figure 1 and Figure 2 it can be seen that the aforementioned first guiding member R1 and the second guiding member R2 are respectively guide rods. In addition, a first convex column B1 and a second convex column B2 are formed on the top side of the base B. Specifically, the aforementioned first guiding member R1 is fixed at a corner of the base B2 and abuts against the aforementioned first convex column B1, and the aforementioned second guiding member R2 is fixed at another corner of the base B and abuts against the aforementioned second convex column B2, wherein the first convex column B1 and the second convex column B2 are located on opposite sides of the carrier LH.
[0088] On the other hand, a first recess LH1 and a second recess LH2 are formed on the aforementioned carrier LH. When the drive mechanism 100 is assembled, the aforementioned first guiding member R1 will be clamped between the first convex column B1 and the first recess LH1, and the aforementioned second guiding member R2 will be clamped between the second convex column B2 and the second recess LH2, wherein the aforementioned first guiding member R1 and the second guiding member R2 can be used to guide the movement of the carrier LH relative to the fixed parts (housing H and base B) along the optical axis O direction (Z-axis direction).
[0089] In this embodiment, the aforementioned first magnetic unit m1 and second magnetic unit m2 are respectively disposed at two opposite corners of the carrier LH for respectively adsorbing and fixing the first guide member R1 and the second guide member R2 on the base B.
[0090] Next, please refer to Figure 5 , wherein Figure 5 shows an exploded view before the first magnetic unit m1 and the second magnetic unit m2 are combined with the carrier LH.
[0091] As shown in Figure 5 , a pair of winding posts N are respectively formed at two opposite corners of the carrier LH. During assembly, one end of four wires (not shown) can be respectively wound around the aforementioned winding posts N, and the other ends are respectively connected to four coils C. Then, the wires located on the winding posts N can be electrically connected to the corresponding lower spring pieces BS below the winding posts N by soldering or welding. In this way, the circuit assembly E can transmit current signals to the aforementioned coils C through the lower spring pieces BS.
[0092] In addition, as can be seen from Figure 5 , the aforementioned first magnetic unit m1 includes a first magnet m11 and a first magnet cover m12, and the aforementioned second magnetic unit m2 includes a second magnet m21 and a second magnet cover m22. The first magnetic unit m1 is installed in the first groove LH1' of the carrier LH, and the second magnetic unit m2 is installed in the second groove LH2' of the carrier LH (as shown in Figure 1 and Figure 2 ).
[0093] Please also refer to Figure 6 and Figure 7 , wherein Figure 6 shows a perspective view after the first magnetic unit m1 and the second magnetic unit m2 are combined with the carrier LH, Figure 7 shows another perspective view of the first magnetic unit m1 and the second magnetic unit m2 after being combined with the carrier LH.
[0094] As shown in Figure 6 , the position of the aforementioned first magnetic unit m1 is adjacent to the first recess LH1 on the carrier LH. After assembly, the first magnet cover m12 will cover the first magnet m11 to prevent the first magnet m11 from being exposed.
[0095] In addition, as shown in Figure 6 and Figure 7 , the position of the aforementioned second magnetic unit m2 is adjacent to the second recess LH2 on the carrier LH. After assembly, the second magnet cover m22 will cover the second magnet m21 to prevent the second magnet m21 from being exposed.
[0096] For example, the aforementioned first magnet m11 and second magnet m21 can be single-pole magnets or multi-pole magnets. The first magnet cover m12 and second magnet cover m22 can be made of non-magnetic metal sheets to protect and fix the aforementioned first magnet m11 and second magnet m21. Moreover, the first magnet cover m12 and second magnet cover m22 can also be made of low-density materials, thereby enabling the driving mechanism 100 to achieve the effect of overall weight reduction.
[0097] Next, please refer to Figure 8 and Figure 9 together, where Figure 8 represents Figure 3 and Figure 4 the top view of the driving mechanism 100 in Figure 9 after removing the housing H and the frame F, Figure 8 represents
[0098] As Figure 8 and Figure 9 shown, the first recess LH1 on the aforementioned carrier LH has a V-shaped structure, where the opening of the first recess LH1 faces the -X axis direction, and the first guide member R1 is slidably abutted against the two side walls of the first recess LH1.
[0099] In addition, as can be seen from Figure 9 the first magnetic unit m1 is hidden in a corner of the carrier LH and is adjacent to the first recess LH1 and the first guide member R1. The first magnet cover m12 with an L-shaped structure is located between the first magnet m11 and the first guide member R1, and there is a distance between the first magnet cover m12 and the first guide member R1.
[0100] In this embodiment, the magnetic pole direction of the first magnet m11 is also parallel to the X axis (the first axis), and the central connection line L1 between the first magnet m11 and the first guide member R1 is parallel to the X axis (perpendicular to the optical axis O). In this way, a first magnetic attraction force parallel to the X axis direction can be generated between the first magnet m11 and the first guide member R1 made of metal material, so that the first guide member R1 can stably contact the two side walls of the first recess LH1 and will not easily fall off from the first recess LH1.
[0101] Please refer to Figure 10 again, where Figure 10 represents Figure 8 the enlarged view of the area A2 in
[0102] As Figure 10As shown, the second recess LH2 on the aforementioned carrier LH has an abutting surface LH20. The second guide member R2 abuts against the aforementioned abutting surface LH20 in a slidable manner, and at least a part of the second stud B2 is located within the second recess LH2.
[0103] In addition, as can be seen from Figure 10 the second magnetic unit m2 is disposed at a corner of the carrier LH and adjacent to the second recess LH2 and the second guide member R2. The abutting surface LH20 of the second recess LH2 is located between the second magnet m21 and the second guide member R2, and there is a distance between the second magnet m21 and the second guide member R2.
[0104] In this embodiment, the magnetic pole direction of the second magnet m21 is also parallel to the X-axis (the first axial direction), and the center connection line L2 between the second magnet m21 and the second guide member R2 is also parallel to the X-axis (perpendicular to the optical axis O). In this way, a second magnetic attraction force parallel to the X-axis direction can be generated between the second magnet m21 and the second guide member R2 made of a metal material, so that the second guide member R2 can stably keep in contact with the abutting surface LH20 of the second recess LH2 and will not easily fall off from the second recess LH2. The aforementioned abutting surface LH20 is, for example, a plane substantially perpendicular to the X-axis (the first axial direction).
[0105] Next, please refer to Figure 11 and Figure 12 together, where Figure 11 shows an exploded view of the first magnetic unit m1, Figure 12 shows a schematic diagram of the first magnetic unit m1 installed in the first groove LH1' of the carrier LH.
[0106] As Figure 11 shown, the first magnetic unit m1 of this embodiment includes a first magnet m11 and a first magnet cover m12. The aforementioned first magnet cover m12 has an L-shaped structure, and a plurality of first card slots m121 are formed at two opposite edges of the first magnet cover m12.
[0107] From Figure 12As can be seen, a first groove LH1' adjacent to the first recess LH1 is formed at a corner of the carrier LH. The first magnet m11 and a first magnet cover m12 are disposed in the first groove LH1', which helps to miniaturize the drive mechanism 100, and the first magnet cover m12 shields the first magnet m11. In some embodiments, when viewed along the direction of the optical axis O, the first magnet m11 overlaps with the carrier LH, but the first magnet m11 does not overlap with the first magnet cover m12. In addition, when viewed along the direction perpendicular to the optical axis O (such as the X-axis direction or the Y-axis direction), the first magnet m11 and the first magnet cover m12 at least partially overlap. Thus, the first magnet cover m12 can protect the first magnet m11.
[0108] It should be noted in particular that a plurality of first bumps LH11 are formed in the first groove LH1'. During assembly, the first bumps LH11 can be respectively inserted into the first card slots m121 of the first magnet cover m12 to prevent the first magnet m11 and the first magnet cover m12 from falling off the carrier LH.
[0109] Please also refer to Figure 13 and Figure 14 , where Figure 13 shows an exploded view of the second magnetic unit m2, Figure 14 and
[0110] shows a schematic diagram of the second magnetic unit m2 installed in the second groove LH2' of the carrier LH. Figure 13 As shown in
[0111] the second magnetic unit m2 of this embodiment includes a second magnet m21 and a second magnet cover m22. The second magnet cover m22 has a U-shaped structure, and a plurality of second card slots m221 are formed on the second magnet cover m22. Figure 14 As can be seen from
[0112] It should be specifically noted that a plurality of second bumps LH21 are formed on the outer surface of the carrier LH. During assembly, the second bumps LH21 can be respectively inserted into the second card slots m221 of the second magnet cover m22 to prevent the second magnet m21 and the second magnet cover m22 from falling off the carrier LH.
[0113] In summary, in the present utility model, a first guiding member and a second guiding member are provided on the fixing part of the driving mechanism, and a first magnetic unit and a second magnetic unit corresponding to the first and second guiding members respectively are provided on the moving part. In this way, a magnetic attraction force can be generated to enable the moving part to stably lean against the first and second guiding members, so that the driving mechanism can stably perform the functions of autofocus (AF) or optical image stabilization (OIS), and can also operate and image normally in a shaking environment to provide good image quality.
[0114] Although the embodiments of the present utility model and their advantages have been disclosed as above, it should be understood that those skilled in the art can make changes, substitutions and modifications without departing from the spirit and scope of the present utility model. In addition, the protection scope of the present utility model is not limited to the processes, machines, manufactures, compositions of matter, devices, methods and steps in the specific embodiments described in the specification. Any person skilled in the art can understand the processes, machines, manufactures, compositions of matter, devices, methods and steps developed currently or in the future from the disclosure of the present utility model, as long as they can perform substantially the same functions or obtain substantially the same results in the embodiments described herein, they can be used according to the present utility model.
[0115] Therefore, the protection scope of the present utility model includes the above-mentioned processes, machines, manufactures, compositions of matter, devices, methods and steps. In addition, each claim constitutes an individual embodiment, and the protection scope of the present utility model also includes the combination of each claim and embodiment.
[0116] Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Those skilled in the art can make some changes and modifications without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model shall be determined by the scope defined by the appended claims.
Claims
1. A driving mechanism for driving an optical element to move, wherein the optical element has an optical axis, characterized in that: The driving mechanism comprises: a fixing portion; a movable portion movably connected to the fixed portion, wherein the optical element is disposed on the movable portion; a first guide member, disposed on the fixed portion and connected to the movable portion, for guiding the movable portion to move relative to the fixed portion along the optical axis; and A driving assembly is used to drive the movable part to move relative to the fixed part.
2. The driving mechanism according to claim 1, characterized in that: The driving mechanism also includes a first magnet disposed on the movable part, and the movable part has a first recessed part, wherein the first magnet and the first guide member generate a first magnetic attraction force, so that the first guide member and the first recessed part maintain contact.
3. The driving mechanism according to claim 2, characterized in that: The driving mechanism further comprises a first magnet cover which is arranged on the movable part and shields the first magnet, wherein the first magnet cover is located between the first magnet and the first guiding member.
4. The driving mechanism according to claim 3, characterized in that: The first magnet cover is a metal sheet without magnetic conductivity.
5. The driving mechanism according to claim 3, characterized in that: The first magnet cover and the first guide member are spaced apart by a distance.
6. The driving mechanism according to claim 3, characterized in that: The movable part also has a first protrusion, and the first magnet cover is formed with a first slot, wherein the first protrusion is embedded in the first slot.
7. The driving mechanism according to claim 3, characterized in that: The first magnet is a single-pole or multi-pole magnet.
8. The driving mechanism according to claim 7, characterized in that: The direction of the magnetic force lines of the first magnet is parallel to a first axial direction, and the first axial direction is perpendicular to the optical axis.
9. The driving mechanism according to claim 8, characterized in that: A center line connecting the first magnet and the first guiding member is parallel to the first axial direction.
10. The driving mechanism according to claim 2, characterized in that: The first recessed portion has a V-shaped structure.
11. The driving mechanism according to claim 10, characterized in that: The driving mechanism also includes a second guide member, which is arranged on the fixed part and connected to the movable part, and is used to guide the movable part to move along the optical axis relative to the fixed part, wherein the first guide member and the second guide member are located at two opposite corners of the fixed part.
12. The driving mechanism according to claim 11, characterized in that: The driving mechanism also includes a second magnet disposed on the movable portion, and the movable portion has a second recessed portion, wherein the second magnet and the second guide member generate a second magnetic attraction force, so as to keep the second guide member and an abutting surface of the second recessed portion in contact.
13. The driving mechanism according to claim 12, characterized in that: The driving mechanism also includes a second magnet cover, which is arranged on the movable part and shields the second magnet, wherein the abutting surface is located between the second magnet and the second guiding member.
14. The driving mechanism according to claim 13, characterized in that: The movable part also has a second protrusion, and the second magnet cover is formed with a second slot, wherein the second protrusion is embedded in the second slot.
15. The driving mechanism according to claim 12, characterized in that: The directions of the magnetic lines of force of the first and second magnets are parallel to a first axial direction, and the first axial direction is perpendicular to the optical axis.
16. The driving mechanism according to claim 15, characterized in that: The abutting surface is a plane perpendicular to the first axial direction.
17. The driving mechanism according to claim 12, characterized in that: The fixing portion has a first protruding column and a second protruding column, and the first and second guiding members are fixed on the first and second protruding columns respectively.
18. The driving mechanism according to claim 17, characterized in that: The first and second protruding columns are located at two opposite corners of the fixing portion.
19. The driving mechanism according to claim 18, characterized in that: At least a portion of the second protrusion is located in the second recessed portion.